Outgoing mayor Michael Bloomberg (L) walks though the crowd outside City Hall as he leaves for last time as Mayor of New York, on New Year's Eve in New York, December 31, 2013. REUTERS/Carlo Allegri (UNITED STATES - Tags: SOCIETY ANNIVERSARY POLITICS)

Outgoing mayor Michael Bloomberg (L) walks though the crowd outside City Hall as he leaves for last time as Mayor of New York, on New Year's Eve in New York, December 31, 2013. REUTERS/Carlo Allegri (UNITED STATES - Tags: SOCIETY ANNIVERSARY POLITICS)